Aluminum is a kind of light metal, small density (2.79/Cm3) with good strength and ductility, aluminum alloy with high strength, super duralumin alloy strength up to 600MPa, ordinary aluminum alloy tensile strength of 200-450Mpa. Its steel ratio is much higher than steel, therefore in the machinery manufacturing are widely used. The electric conductivity of aluminum is second only to that of silver and copper, and ranks third, which is used to make all kinds of wires. Aluminum has good thermal conductivity, can be used as a variety of heat sink materials. Aluminum also has good corrosion resistance and good plasticity, suitable for all kinds of pressure processing. Aluminum alloy can be divided into deformed aluminum alloy and cast aluminum alloy. Wrought aluminum alloy can be divided into non heat treated reinforced aluminum alloy and heat treated reinforced aluminum alloy. The non heat treatment enhanced mechanical properties can not be improved by heat treatment, only through the cold processing deformation to achieve strengthening, it mainly includes high pure aluminum, industrial high purity aluminum, industrial pure aluminum and rust proof aluminum, etc.. Heat treatment strengthening aluminum alloy can be by means of quenching and aging heat treatment to improve the mechanical properties, it can be divided into aluminum, aluminum forging, super hard aluminum and special aluminum alloy etc.. Aluminum alloy can be used to obtain good mechanical properties, physical properties and corrosion resistance. According to the chemical composition can be divided into Aluminum Alloy casting Al Si alloy, Al Cu alloy, aluminum magnesium alloy and aluminum zinc alloy.

       1 pure aluminum products pure aluminum smelting and pressure processing products two categories, the former chemical composition Al said, the latter with Chinese Pinyin LG (aluminum, industrial use) said.

       2 aluminum alloy pressure processing aluminum alloy pressure processing products are divided into rust (LF), hard (LY), forging (LD), super hard (LC), coating (LB), special (LT) and brazing (LQ) and other seven categories. The commonly used Aluminum Alloy materials (M bank) for annealing and hardening (Y), hot (R) three.

      3 aluminum and aluminum alloy processed into a certain shape of the materials collectively referred to as aluminum, including the board, tape, foil, tube, rod, wire, type, etc..

      4 cast aluminum alloy casting aluminum alloy (ZL) according to the composition of the main elements of aluminum silicon, copper, magnesium, zinc is divided into four categories, code named encoding respectively 100, 200, 300, 400.

      5. High strength aluminum alloy high strength aluminum alloy refers to its tensile strength is more than 480 MPa of aluminum alloy, mainly aluminum alloy processing of duralumin alloy, super duralumin alloy and casting alloy.